Comment 52 for bug 1509723

@Richard.

you mean the firmware files ?
i did install those files, manually, yes.
But i have no idea which "manager tool" you could be referring to.
Concerning "the official intel graphics driver":
i am using xf86-video-intel with sna , like almost everyone here is probably doing.
i tried sna, uxa xaa, also disabling dri or used ilo for dri.
ubuntu(mint) is not my main system, i just have an old linux mint system on a partition i don't use anymore but that has exactly the same kernel problems. i am running gentoo linux.
i tried the intel video driver and modules with nearly all the options (xorg config file, kernel module options for i915 etc) on mint and on gentoo, and i can almost certainly say that the system freezes have nothing to do with it.
anyway, i am running now kernel 4.4.0-rc6 with extra cmdline parameter "intel_idle.max_cstate=1" and all seems to be good. it is the 3rd day now without freezing i believe.
Thank you for your explanation with the cstate. yes, it is a limitation but i still prefer running the newer kernel with lower performance than having the old 4.1 kernel